defbubble_sort(nums)
swapped = True
while swapped:
    swapped = False
    for i in range(len(nums)-1):
        if nums[i] > nums [i+1]:
            nums[i] , nums [i+1] = nums[i + 1] , nums[i]
            swapped = True
def read2list(filename):
    file = open(filename , 'r')
    data = file.readlines ()
    return data
    
